Glue-applying apparatus.



F. G. PERKINS, D ECD.

G. S. PERKINS, EXECUTRIX.

GLUE APPLYING APPARATUS.

APPLLCATION FILED JUNE 15, I911.

Patented 0011.1, 1918...

warren erm ne Parana @FFTQE.

FRANK G. PERKINS, DECEASED, LATE 0F LANSDALE, PENNSYLVANIA, ."BYGERTRUDE S. PERKINS, EXECUTRIX, OF SOUTH BEND, INDIANA, ASSIGNOR TOPERKINS GLUE COMPANY, A CORPORATION OF PENNSYLVANIA.

Specification of Letters Patent.

Application filed June 15 1917. Serial in. 174,999.

To all whom it may concern:

Be it known that FRANK G. PE KINs, deceased, late a resident ofLansdale, borough of Lansdale, State of Pennsylvania, did invent certainnew and useful Improvements in- Glue-Applying Apparatus, of which thefollowing is a specification.

The invention relates to improvements in glue applying apparatus. Priorto the present invention, it waseommon to apply glue to wood veneers,etc., 'by carpet rolls. Such rolls are quite inadequate for certainglues, particularly a glue such as described in Reissue Letters Patent13,436 and Letters Patent 1,020,656, 1,078,691, 1,078,692 and 1,200,488.The main object of the present invention is to provide a roll andapparatus which will practically apply such heavy viscous glues whichare similar to high grade animal glues for gluing up furniture veneersand the like. This application is a continuation in part of copendingapplication which resulted in the granting of the United States LettersPatent No. 1,238,810 September 4, 1917. According to the presentinvention, the glue roll is corrugated or grooved in a special way andso constructed that a substantially continuous coating of such heavyviscous glue may be applied as the roll revolves, but in a sufficientlythin layer to prevent any material amount of the glue being wasted anadjustable scraper being provided to regulate the exact amount of glueapplied. 1

In the accompanying sheet of drawings which forms a part of thisspecification, Figure 1 is a vertical section through a glue spreaderadapted to operate rolls according to the present invention, and Figs. 2to 6 incllusive illustrate the grooving of such rol s.

Referring to Fig. 1, 1 represents a suitable frame, in which isjournaled a lower glue.

applying roll 2. Situated below the roll 2 and extending the wholelength of the same is a lower glue trough 3 for applying glue to thecylindrical surf-ace of roll 2. Glue trough 3 has an opening in itsbottom for withdrawing glue from the trough, this opening being normallycovered by a gate 4, hinged at 5 and provided with a handle for movingthe gate. Extending up through the bottom of the glue trough 3 are twosteam pipes 7, which connect with an enlarged steam pipe or cylnder 8,extending longitudinally in the glue trough 3 for the purpose chine. Themember 9 has one part thereof Patented (Oct. 1, 1918.

forming a substantia1 extension for the front side of the-glue trough 3and is pivotally mounted on the main frame 1 at 10. The member '9carries on its inner end a scraper 12, adapted to remove the surplusglue from the roll 2, as it revolves and regulate the amount of glueapplied. Ateach end of the machine there is provided a stop 13, on themain frame 1, and coiiperating therewith and passing vertically, throughthe member 9 at some distance from the point 10 are adjusting set screws14, provided with locking nuts 15. By adjusting the position of the setscrews 14 within the member 9, the position of the scraper 12 in respectto the surface of the glue roll 2 may be adjusted as desired and thedownward movement of the scraper 12 toward the glue roll-2 may belimited to any desired position. Pivotally mounted on the main frame 1and on the shaft 16 is a frame 17. The shaft 16 is above or at one sideof a vertical plane through the axis of roll 2. Journaled in the frame17, above the roll 2, is an upper glue applying roll 18. Rigidly fixedto frame 17 and cooperating with the roll 18 are the ends 19 of an upperglue applying trough for the glue roll 18. The rear side of this trough20 is also rigid with the frame 17, and the rear side 20 is providedwith a bulging portion 21. The front side of the upper glue troughconsists of a member 22, hinged to the ends 19, as by a shaft 23. Thefront side 22 of the upper glue trough also carries a portion formingthe bot-tom 24 of the glue trough, which, in turn, carries a scraper 25the member 22 are lugs 27 at each end of the machine, through which passset screws 28,

- cooperating with stops 29 upon the end pieces 19. By means of the setscrews 28 and stops 29 the position of the front wall of the upper gluebox maybe adjusted as desired, and consequently the movement of thescraper 25 toward the upper glue roll 18 may be limited and adjusted toany desired posi tion.

For the purpose of holding the scrapers 25 in the adjusted position withrespect'to the glue roll 18, there is provided at each end of themachine a swinging member 30, swinging about a bent portion31 as apivot. Bent portions 31 of the arms 30 are passed into the front wall22, inside of the upper glue trough. The arms 30 are adapted to seat inrecesses in the member 20 and the arms 30 are provided with nuts 33 ontheir outer ends, so that when the arms 30 are seated in the recesses 32the nuts 33 may be turned and thus draw the member 22' and scraper 25inwardly until the set screw 28 engages the stop 29 to limit themovement of the scraper towardthe upper glue roll and hold it in itsadjusted position.

When it is desired to release the front member 22 and the scraper 25, itis only neces-, sary to give the nuts 33 a slight turning movement, whenthe arms 30 may be thrown upwardly and swung about their thus releasingthe entire frontwal 22 and the scraper 25, so that it may be easilymoved-backward and away from the roll 18 as far as desired. Similar armsand nuts may beprovided for holding the lower scraper 12 in position.

For the purpose of heating the glue within the upper glue trou h, thefront wall 22 is provided with a hoIlow portion therein 37, extendingsubstantially the whole length of the upper trough. Steam pipes 38 areprovlded for supplying steam or hot water to this space 37 in order toproperly heat the glue in the up er trough. Rigid with the pivoted arm 1and extending in the opposite direction from the shaft 16 are arms 39,one at each end'of the machine. Also fixed, one to each end of the mainframe of the machine as at 41, are rods 40, which extend upwardly andpass through apertures in the arms 39. Above the arms 39 the rods 40 areprovided with adjusting nuts 42 carrying hand wheels 43, the nuts 42resting in cup shaped depressions in the ends of the'arms 39. The lengthof the arms or rods 40 may be adjusted by inserting spacmg members 44between the nuts 45 will be moved upwardly or downwardly, as

desired, thus at the same time moving the ivots 31,

. wide. on the ends of the rods 40 and the lugs 41 I .on the main frameof the machine.

memes upper glue roll 18 so that the space between it and the lower glueroll 2' may be adjusted as desired.

In order to help force the upper glue roll downwardly toward the lowerglue roll 2, there is provided a clip 46 extendin over the ends 19 ateach end of the machine, to each of which clips are bolted rods 47. Thelower ends of the rods 47 are pivotally connected to a lever member. Oneend of the lever member is held in fixed position by means of a rod '50,secured to the floor or base of the apparatus. The lever is pivoted tothe upper end of the rod 50 to form a fulcrum point. At the outer end ofthe lever or at the end of its long arm, there is connected anadjustable weight or weights 4 It will therefore be seen that the theupper glue roll 18 exerts downwardly may be ad usted as desired. Fordriving the apparatus there is provided a main driving wheel 52,suitably journaled to the main frame. The driving wheel 52 is fixed to ashaft 53, which carries a gear wheel, which, in turn, meshes with a gearwheel 55 secured to the lower glue roll 2, for the purpose of drivingthe same. The upper glue roll 18 is driven from the shaft 53 by anysuitable connecting driving devices.

In order that the glue may be applied properly to the wood or othermaterial when run through the ap aratus between the rolls, the rolls aregroove or corrugated. As illustrated in Figs. 2 to 6, the rolls aregrooved longitudinally, the grooves being substantially arallel to oneanother.

As illustrated in Fig. 2 there are about 8?,- grooves to the inch, the.grooves being about .08 inch wide at the top and about .04 inch deep,the arts between the grooves having substantially flat faces about .04inch wide which are adapted to engage the material operated upon orbeing glued.

In Fig. 3, there are about 10 grooves to the inch, the grooves beingabout .06 inch wide at the top and about .04 inch deep with theintermediate substantially fiat faces about .04 inch wide.

' In Fig. 4, there are 10% grooves to the inch, about .05 inch wide andabout .06 inch deep with intermediate flat faces about .04 inch In Fig.5 there are 11 grooves to the inch,

"the grooves being about .045 inch wide and about .O4inch deep with theintermediate flat faces about-.045 inch wide.

In F ig. 6, there are about 12 grooves to i the inch, the grooves being.about .04 inch aaeaaea ing a substantial taper outwardly so that thegrooves are wider at the top than at the bottom. This permits the glueto be more easily and uniformly withdrawn therefrom. For similar reasonsit is preferable to provide the bottoms of the rooves with curvedbottoms as illustrated in Figs. 2 to 6. It is desirable that there besome substantially jfiat face between the grooves in order that the rollwill not bite into the wood or other material to an undesirable extent.

The grooves should be between 6 and 16 to the inch, from .02 inch to .06inch deep, from .03 inch to .08 inch wide at the top. Preferably thereshould be over 8 and not over about 12 to the inch as illustrated inFigs. 2 to 6, and when the grooves are about 10 to the inch, about .04inch or more deep, about .05 inch wide at the top, asillustrated inFigs. 3 and 4, they serve admirably for general use.

What is claimed as new and desired to be secured by Letters Patent is:

11 The combination of a glue applying roll grooved longitudinally andarranged to apply the glue evenly and directly to the surface to beglued, the grooves having curved bottoms which merge into the side wallsthereof, the side walls tapering out-1 wardly so that the grooves arewider at the top than at the bottom, the parts between said grooveshaving substantially flat faces for engagement with the material to beglued, the grooves being about .04 inch or more deep, about .05inch wideat the top and about 10 to the inch, and an adjustable scrapercooperating with said roll to regulate the quantity of glue appliedwhereby a substantially continuous coating of glue will be applied.

2. The combination of a glue applying roll grooved longitudinally andarranged to apply the glue evenly and directly to the surface to beglued, the parts between said grooves having substantially fiat facesfor engagement with the material to be glued, the grooves beingabout .04inch or more deep, about .05 inch wide at the top and about 10 to theinch, and a scraper cooperat ing with said roll. to regulate thequantity of glue applied, whereby a substantially continuous coating ofglue will be applied.

3. The combination of a glue applying roll having substantially parallelgrooves,-

wider at the top than at the bottom, the parts between said grooveshaving substantially fiat faces for engagement with the material to beoperated upon, the grooves being at least .02 inch deep and at least .03inch wide and from 8 to about 12 to the inch and an adjustable scrapercooperating with said roll to regulate the quantity of glue applied.

4. The combination of a glue applying roll having substantially parallelgrooves, and arranged to apply the glue evenly and directly to thesurface to be glued, the parts between said grooves having substantiallyflat faces for engagement with the material to be operated upon, the.grooves being at least .02 inch deep and at least .03 inch wide andfrom 8 to 16 to the inch, and a scraper cooperating with said roll toregulate the quantity of glue applied, whereby a sub stanltiiailycontinuous coating of glue will be ap e g The combination of a glueapplying roll having substantially parallel grooves, and arranged toapply the glue evenly and directly to the surface to be glued, thegrooves having curved bottoms which merge into the side Walls thereof,the side walls tapering outwardly so that the grooves are 'Wider at thetop than at the bottom, the

' and arranged to apply the glue evenly and directly to the surface tobe glued, the grooves being at least .02 inch deep and at least .03 inchwide and from 8 to about 12 to the inch, and an adjustable scrapercooper ating directly with said roll to regulate the quantity of glueapplied, whereby a substantially continuous coating of glue will beapplied.

7. The combination of a glue applying roll having substantially parallelgrooves, and arranged to apply the glue evenl and directly to thesurface to be glue the grooves having curved bottoms and side wallstapering outwardly, so that the grooves are wider at the top than at thehotllllti tom, the parts between said grooves having i 12 to the inch,and an adjustable scraper cooperating with said roll to regulate thequantity of glue applied.

8. The combination of a glue applying roll having substantially parallelgrooves, and arranged to apply the glue evenl and directly to thesurface to be glue the grooves having side walls tapering outwardly, sothat the grooves are wider at the top than at the bottom, the partsbetween. said grooves having substantially flat faces for engagementwith the material to be operated upon, the grooves being from .02 inchto .06 inch deep, from .03 inch to .08 inch wide and from 8 to 16 to theinchand an'adjustable scraper cooperating with said roll to regulate thequantity of glue applied.

9. The combination of a glue applying roll having substantially parallelgrooves, and arranged to apply the glue evenly and directly .to thesurface to be glued, the grooves having curved bottoms and the partsbetween said grooves having substantially fiat faces for engagement withthe material to be operated upon, the grooves being from .02 inch to .06inch deep, from .03 inch to .08 inch wide and from 8 to about 12 to theating with said roll to regulate the quantity i of glue applied.

11. The combination of .a glue applying roll having substantiallyparallel grooves, and arranged to apply the glue evenly and directly tothe surface to be glued, the

grooves being from .02 inch to .06 inch deep,

from .03 inch to .08 inch Wide and from 8 to about 12 to the inch and anadjustable scraper cooperating with said roll to regulate the quantityof glue applied.

12. The combination of "a glue applying roll having substantiallyparallel grooves,

mamas and arranged to apply the glue evenly and directly to the surfaceto be glued, the grooves being from .03 inch to .08 inch wide and from 8to about 12 to the inch and an adjustable scraper cooperatingdirectlywith saiiddroll to regulate the quantity of glue app 1e 13. Thecombination of a glue applying roll grooved longitudinally, and arrangedto apply the glue evenly and directly to the surface to be glued, theparts between said grooves having substantially flat faces forengagement'with the material to be glued, the grooves being about 10 tothe inch and an adjustable scraper cooperating directly with said rollto regulate the quantity of glue applied, whereby a substantiallycontinuous coating of glue will be applied.

14. The combination of a glue applying roll having substantiallyparallel grooves, and arranged to apply the glue evenly and directly .tothe surface to be glued, the grooves being between 6 and 16 to the inchand a scraper cooperating with said roll to regulate the quantity ofglue applied, whereby a substantially continuous-coating of glue will beapplied.

15. The combination of a glue applying roll having substantiallyparallel grooves, and arranged to apply the glue evenly and directly tothe surface to be glued, the parts between said grooves havingsubstantially fiat faces for engagement with the material to be operatedupon, the grooves belng from .03 inch to .08 inch wide and from 8 toabout 12 to the inch and an adjustable scraper cooperating with saidroll to regulate the quantity of glue applied. I

In testimony whereof I have signed my name to this specification this8th day of June, 1917 at South Bend, Indiana.

GERTRUDE s. PERKINS, Ewecutm'm of Frank G, Per-kins, deceased.

Witnesses:

S. D. TAnoR, L. MoMmN.

